Some unknown error happened while getting the data. Please try again l

[sujanya]

While adding the Area /Building details in the Network Hierarchy filed of DNAC, we are getting the below error. Please suggest.

"Some unknown error happened while getting the data. Please try again l"

[ammahend]

Clear browser cache, try Cisco recommended browser 

• Google Chrome: Version 73.0 or later.

• Mozilla Firefox: Version 65.0 or later.

make sure you are following correct procedure below.

https://www.cisco.com/c/en/us/td/docs/cloud-systems-management/network-automation-and-management/dna-center/2-3-3/user_guide/b_cisco_dna_center_ug_2_3_3/m_design-the-network-hierarchy.html#task_zdk_k2d_wy

let me know version and appliance details, if it still doesn’t work.